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Dan&Darci Advanced Rock TumblerSurreal Brands

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Dan&Darci Advanced Professional Rock Tumbler Kit - with Digital 9-Day Polishing Timer & 3 Speed Settings - Turn Rough Rocks into Beautiful Gems : Great Science & STEM Geology Toy for Kids All Ages

Name: Amazon.com: Dan&Darci Advanced Professional Rock Tumbler Kit - with Digital 9-Day Polishing Timer & 3 Speed Settings - Turn Rough Rocks into Beautiful Gems : Great Science & STEM Geology Toy for Kids All Ages : Toys & Games
Price: 59.99 USD
Availability: InStock
Rating: 4.4 (9201 reviews)

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4.4 9,201 ratings

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$59.99 with 25 percent savings

Typical price: $79.99

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Turn rough rocks into polished gems: Discover and learn the fun process of rock tumbling with the Advanced Rock Tumbler. Pour in the rough stones and grit and let the machine do its job!
Complete kit: Includes: rock tumbler machine, low-noise barrel (1 lb. capacity), 4 grit packets, 1/2 lb. assorted rough rocks, mesh strainer, jewelry fasteners, gem storage bag, and an illustrated easy-to-follow instruction and learning guide booklet.
Powerful quality: Runs on a powerful heavy duty motor that will last for a very long time, and includes a leak-resistant barrel that runs quieter than the other brands.
Advanced features: Includes speed controls (providing more granular tumbling results), a 9-day timer (shuts off automatically when you desire), all displayed on beautiful LCD screens.
A fun and educational gift for all ages: It's not often that a science project can be fun and engaging, but this kit achieves both! It fascinates children and adults as soon as they pull it out of the box and is a perfect STEM project for any age. It fosters a love for science, geology and mineralogy in a fun and exciting way.

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Product information

Product Dimensions

12.99 x 9.06 x 5.51 inches

Item Weight

5.99 pounds

ASIN

B07Q32W334

Item model number

DD009

Manufacturer recommended age

8 years and up

Best Sellers Rank

#16,224 in Toys & Games (See Top 100 in Toys & Games)
#10 in Kids' Rock Tumblers

Customer Reviews

4.4 9,201 ratings

4.4 out of 5 stars

Is Discontinued By Manufacturer

Manufacturer

Dan&Darci

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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WARNING: California’s Proposition 65

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Safety Information

Not For Children Under 8 Years

From the brand

Never Cease to explore!
We are Dan & Darci! As you can tell from our name, we think that two are better than one. That’s why we create quality toys and science kits that are BOTH entertaining AND educational. Our lab of mad scientists develops the coolest products for kids ONLY — because they know that while you love to grow your brains and be the smartest one in the room, you’re only going to do it if you’re having fun!
Get Inspired!
Education Made Fun!

Product Description

Welcome to the fabulous world of rock tumbling!

For thousands of years, Mother Nature has been tumbling rocks in water and sand to make them smooth and shiny. Now it's your turn!

Collect all types of rocks and turn them — yourself — into colorful gemstones. Make your own jewelry, use them in crafts or decorations, or just collect them for fun!

Get the Dan&Darci Advanced Rock Tumbler, bring your curiosity, and get your gem collection started now!

ABOUT US:

We are Dan & Darci!

As you can tell from our name, we think that two is better than one. That’s why we create quality toys and science kits that are BOTH entertaining AND educational.

Our lab of mad scientists develop the coolest products — because they know that while you love to grow your brains and be the smartest one in the room, you’re only going to do it if you’re having fun!

Unique Gift Idea

Although this is extraordinarily educational, it’s also wildly entertaining for all ages, which makes it an excellent gift!

It’s not often that a science project can be fun and engaging, but this kit hits the nail on the head and fascinates children and adults as soon as they pull it out of the box.

Perfect STEM Project

Whether you’re a parent or a schoolteacher, you’ll quickly appreciate the vast knowledge that this can provide.

While being super fun and engaging, this one product provides young students with that essential hands-on experience they need to truly absorb this priceless knowledge and information.

Complete Kit

Everything is included - just add water!

Includes:

Rock Tumbler Machine and Barrel
0.5 lb Assorted Rough Rocks
4 Grit Packets
Mesh Strainer
Jewelry Fasteners
Rocks Storage Bag
Learning Guide

Illustrated Learning Booklet

Easy step-by-step instructions so that everyone can follow along easily.

Also included is a comprehensive learning guide on the history of rock tumbling, and explanation of all the rocks included in the kit.

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Customer reviews

9,201 global ratings

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Customers say

Customers find the science fundamentals kit easy to use and with great results. They find the instructions clear and easy to follow, with no microscope required. Many customers are satisfied with the appearance. However, some have differing views on noise level, build quality, belt slippage, value for money, and size.

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Works well Ease of use Appearance Noise level Build quality Belt slippage Value for money Size

483 customers mention "Works well"347 positive136 negative

Customers are satisfied with the science fundamentals kit. They find it works well, produces great results, and is a good starter tumbler. Some mention it's noisy but runs quietly. Overall, customers are happy with this kit and consider it a wonderful hobby at a great price.

"...Happy with the tumbler." Read more

"...It seems yo be functioning well. It’s loud-ish. I have it on my screened-in porch, but we can’t hear it inside. Almost like a white noise...." Read more

"...The rocks that come with it are a good starter; there are some findings included for finished rocks; and the instructions are reasonably good..." Read more

"...I went to multiple outlets...and nothing. It wouldn't turn on at all...." Read more

243 customers mention "Ease of use"232 positive11 negative

Customers find the product easy to use. The instructions are clear and simple to follow, with no microscope needed. They appreciate that the machine works well and is easy to set up and operate.

"Instructions were easy to follow. The box had all the pieces and grits - no missing parts...." Read more

"...are some findings included for finished rocks; and the instructions are reasonably good (accepting some significant caveats below)...." Read more

"...The machine was as solid and sturdy as it appeared and the instructions were very clear and easy to follow...." Read more

"Looking for a hobby so got this one to try. It easy to use and I can use rocks from my yard...." Read more

82 customers mention "Appearance"82 positive0 negative

Customers are satisfied with the appearance of the rocks produced by the science fundamentals kit. They mention the stones look nice, smooth, and not shiny. The tumbler produces beautiful stones for a small tumbler, with different smoothness, color, and texture. The instructions are clear and well-written, making classroom use smooth.

"...of the Dan&Darci machine; it looked solid and stable, it was professional looking...." Read more

"...The instructions are very nicely printed and easy to follow, in full color too...." Read more

"...small drum so you'll only be doing smaller pieces but they are looking pretty good! Quite happy with this machine" Read more

"...Each phase thus far has created a different in the smoothness, color, etc...." Read more

279 customers mention "Noise level"142 positive137 negative

Customers have different views on the noise level of the product. Some find it not too noisy and enjoy the sound of rocks being tumbled, while others say it's a little loud but runs well in the garage.

"...It made much less noise than expected...." Read more

"...It seems yo be functioning well. It’s loud-ish. I have it on my screened-in porch, but we can’t hear it inside. Almost like a white noise...." Read more

"...This is a very nice kit to get started and the unit runs surprisingly quiet" Read more

"...This means it's on the louder end (we kept it in the garage) and it doesn't seem to do a good job on more angular or larger rocks, because the..." Read more

224 customers mention "Build quality"109 positive115 negative

Customers have different views on the build quality of the tumbler. Some find it well-constructed and a nice product, with no belt issues or noise problems. Others report that it breaks after a year, is noisy, and not very reliable. The rubber grommet/belt wore down recently, but we got 5 replacements for just 7.

"...The machine was as solid and sturdy as it appeared and the instructions were very clear and easy to follow...." Read more

"...the tumbler pulls to the left when running and one of the plastic washers is wearing down. Hopefully, even with that, it will continue to work well." Read more

"...owned (harbor freight, tumblebee, and a lortone) and they definitely hold up...." Read more

"This is my second one of these tumblers. On the first one the belt fatigued. It lasted about a year of constant use. The tumbler itself works fine...." Read more

91 customers mention "Belt slippage"35 positive56 negative

Customers have mixed opinions about the belt slippage. Some say they enjoy tumbling the rocks and that it comes with the necessary equipment and media for tumbling stones. Others mention the belt keeps coming off the tumbler, it tumbles too fast for all stages, even on the lowest speed, and can move around and potentially fall off the table.

"...good job on more angular or larger rocks, because the tumbling action is just too aggressive...." Read more

"This rock tumbler let's you put in days of tumbling and speed to tumble. I've run it for 7 days with the coarse grit, now working on second cycle...." Read more

"...One thing I am worried about, is the tumbler pulls to the left when running and one of the plastic washers is wearing down...." Read more

"...It has been running nearly non stop for 1 year but something internal is slipping and it won't rotate anymore...." Read more

86 customers mention "Value for money"53 positive33 negative

Customers have different views on the value for money of the science fundamentals kit. Some find it worth the price and produces good results, while others say it stops all the time, is a cheap product, and a waste of money and time. The motor is cheap and the barrel shift doesn't stay in place, making it useless for some customers.

"The tumbler works well enough, it's very reasonably priced, and generally a good kit...." Read more

"...that this is a piece of garbage made iwth materials from the cheapest supplier and it shows." Read more

"...It seems nothing is too much for it. The finished product is always spectacular! The noise is always minimal...." Read more

"...Don't know how they will turn out. Good price though." Read more

74 customers mention "Size"33 positive41 negative

Customers have different views on the size of the product. Some find it small enough to fit in a corner but big enough to fit quite a few rocks. The smaller barrel makes it perfect for trying new things without having to purchase a larger one. Others feel the barrel is smaller than expected and doesn't fit as much as they would like it to. The drum is also small, only 1 lb, compared to other tumblers at 3 lbs.

"...There's also an included strainer, but we found it much too small, and just used a small colander from our kitchen...." Read more

"...The drum size is only 1 lbs so you you're looking to polish stones you'll be doing small ones. I'll collect 50-75 coins while metal detecting...." Read more

"...The tumbler itself works fine. The barrel is small for large stones...." Read more

"...It also reduces their size by half, some more or less depending ob the type of rock and its hardness. Good hobby starter, good array of accesories...." Read more

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Amazon Customer
Rock tumbler
Reviewed in the United States on February 16, 2025
Verified Purchase

This rock tumbler let's you put in days of tumbling and speed to tumble. I've run it for 7 days with the coarse grit, now working on second cycle. Happy with the tumbler.

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Amazon Customer

Rock tumbler

Reviewed in the United States on February 16, 2025
This rock tumbler let's you put in days of tumbling and speed to tumble. I've run it for 7 days with the coarse grit, now working on second cycle. Happy with the tumbler.

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officegrl3
It’s cool!
Reviewed in the United States on July 8, 2024
Verified Purchase

The media could not be loaded.

Instructions were easy to follow. The box had all the pieces and grits - no missing parts. It seems yo be functioning well. It’s loud-ish. I have it on my screened-in porch, but we can’t hear it inside. Almost like a white noise. My kids and I were on the porch playing with cardboard boxes and the sound didn’t bother us at all. We could easily hear each other over the sound.

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officegrl3

It’s cool!

Reviewed in the United States on July 8, 2024
Instructions were easy to follow. The box had all the pieces and grits - no missing parts. It seems yo be functioning well. It’s loud-ish. I have it on my screened-in porch, but we can’t hear it inside. Almost like a white noise. My kids and I were on the porch playing with cardboard boxes and the sound didn’t bother us at all. We could easily hear each other over the sound.

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5 people found this helpful

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Justin
Tumbler works well, but far too little grit is supplied
Reviewed in the United States on March 13, 2022
Verified Purchase
The tumbler works well enough, it's very reasonably priced, and generally a good kit. The rocks that come with it are a good starter; there are some findings included for finished rocks; and the instructions are reasonably good (accepting some significant caveats below). There's also an included strainer, but we found it much too small, and just used a small colander from our kitchen.

Accepting the good points, there are a few important things to consider:

1) The kit comes with a paltry amount of grit. We followed the instructions to the letter using the small grit packets provided in the box, and just couldn't get a good polish on the included rocks. However, we had also bought a set of additional grit at the same time, so we re-ran exactly the same rocks with proper amounts of grit and got a beautiful polish. The additional grit was exactly the same grade and composition as the original, but its instructions called for 2-3x more grit per run. So, I expect a lot of people will be underwhelmed at the polish they get, not realizing that the minimal amount of grit is likely the problem. Since grit is a consumable that you'll need more of anyway, you can save yourself a wasted month of tumbling by buying more grit and just topping off what comes with the kit (2 tbsp for stages 1 and 2, and 1 tbsp for stages 3 and 4).

2) The tumbler runs fast, even at its slowest speed (seems at least twice as fast as the tumblers I'm familiar with). This means it's on the louder end (we kept it in the garage) and it doesn't seem to do a good job on more angular or larger rocks, because the tumbling action is just too aggressive. Anything under 3/4" diameter and/or mostly round will polish up great—which mostly included the rocks that came with our set—but anything outside that ended up with some unpolished edges (although the smooth/flat parts still polished up well). That stated, you can cheat and use mineral oil to mostly hide the rough edges, but they still won't look as good as they do with a proper polish. (Although, I haven't yet tested if ceramic media or poly pellets could improve this situation by cushioning the rocks during the final polish stage.)

3) The instructions could be better with respect to cleaning, and don't cover burnishing at all. For cleaning between stages, after a thorough rinse I strongly recommend putting the rocks back in the tumbler with warm water and a drop or two of dish soap, and then just running it for an hour on its lowest speed. This will clean out all of the grit from the last stage. Then just re-rinse (the sink is fine in this case, since there's so little grit) and start the next tumbling stage.

You may want to burnish as a final step, to get a better shine. There are a number of good guides available, so I suggest just searching for the term "rock burnishing".

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181 people found this helpful

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Jackie M.
Works well
Reviewed in the United States on January 28, 2025
Verified Purchase
Great machine. It is a little noisy but I just put in another room.

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Andrew Eisenberg
Love this!
Reviewed in the United States on April 12, 2019
Verified Purchase
I often collect rocks wherever I go, I have for years, and I’ve wanted to get a rock tumbler for some time. When my daughter expressed interest finally getting one was an instant no-brainer. I liked the look of the Dan&Darci machine; it looked solid and stable, it was professional looking. I liked that it had multiple speeds and a multi-day timer.

As soon as we got it my daughter couldn’t wait to get started. The machine was as solid and sturdy as it appeared and the instructions were very clear and easy to follow. We put in the rocks, grit, and water, sealed the barrel and turned it on. It made much less noise than expected.

We’ve had this running for a while; no issues, no leaks, no problems … many jealous friends and family members...

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370 people found this helpful

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Sylvia Brown
Perfectly satisfied
Reviewed in the United States on January 26, 2025
Verified Purchase
I'm having a great time with this tumbler. Perfect for this newbie. It's not just for kids. I'm 81.

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2 people found this helpful

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Dolly
100% recommend
Reviewed in the United States on February 21, 2025
Verified Purchase
My son loves this. Great for new rock lovers.

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Father3Bear
Easy to use, good life.
Reviewed in the United States on June 14, 2024
Verified Purchase
Purchased October 2021, died June 2024, motor locked up after almost constant running. Not bad for what I consider an entry level tumbler.

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15 people found this helpful

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Alex
Great tumbler
Reviewed in Canada on October 13, 2024
Verified Purchase

I have been using this so much! I love making my rough beach rocks smooth and shiny. I have quite the dragon board morning stones now. It is loud, but no louder than a washing machine, so I keep it in the laundry room and barely notice it. 10/10

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Detlef Bruehl
Steine bearbeiten bis Sie blank sind…
Reviewed in Germany on January 28, 2025
Verified Purchase
Die Trommel ist aus relativ festem Gummi und hat ausreichend Platz für 5 Kieselsteine mit ca. 5cm Durchmesser. Packt man zu viele Steine in die Trommel, dann dauert das Polieren länger oder funktioniert nicht weil die Steine sich nicht genügend bewegen können. Die Trommel ist dicht und läuft ganz gut… allerdings mit einem hörbaren Geräusch. Am besten man stellt den Tumbler in die Garage und lässt ihn dort laufen. Man kann die Drehzahl einstellen und mit einer Tages Laufzahl einstellen nach wie vielen Tagen das Gerät sich abschalten soll.
Wichtig ist, dass die die Steine sich gut bewegen und die Trommel dadurch rund läuft.
Na ja, und immer wieder betone ich das man Zeit braucht. Nach 5 bis 7 Tagen kann man dann die Trommel öffnen und den Inhalt ausspülen… Trommel und Deckel reinigen und mit der nächsten Poliermittelstufe befüllen… frisches Wasser einfüllen… Trommel gewissenhaft und mit Gefühl verschließen und los gehts.
Viel Erfolg.

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Detlef Bruehl

Steine bearbeiten bis Sie blank sind…

Reviewed in Germany on January 28, 2025
Die Trommel ist aus relativ festem Gummi und hat ausreichend Platz für 5 Kieselsteine mit ca. 5cm Durchmesser. Packt man zu viele Steine in die Trommel, dann dauert das Polieren länger oder funktioniert nicht weil die Steine sich nicht genügend bewegen können. Die Trommel ist dicht und läuft ganz gut… allerdings mit einem hörbaren Geräusch. Am besten man stellt den Tumbler in die Garage und lässt ihn dort laufen. Man kann die Drehzahl einstellen und mit einer Tages Laufzahl einstellen nach wie vielen Tagen das Gerät sich abschalten soll.
Wichtig ist, dass die die Steine sich gut bewegen und die Trommel dadurch rund läuft.
Na ja, und immer wieder betone ich das man Zeit braucht. Nach 5 bis 7 Tagen kann man dann die Trommel öffnen und den Inhalt ausspülen… Trommel und Deckel reinigen und mit der nächsten Poliermittelstufe befüllen… frisches Wasser einfüllen… Trommel gewissenhaft und mit Gefühl verschließen und los gehts.
Viel Erfolg.

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Franz K.
SATISFAIT
Reviewed in Belgium on January 24, 2025
Verified Purchase
Il tient toutes ses promesses. Le mode d'emploi devrait être plus détaillé à mon avis. Produit à se procurer, d'ailleurs je vais de ce champs en recommander 1 autre.

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PRIMOPIANO
Bello
Reviewed in Italy on October 9, 2024
Verified Purchase
Kit completo per iniziare a lavorare

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Endurance
Hace lo que dice.
Reviewed in Spain on January 8, 2024
Verified Purchase
Muy educativo, mi hijo está encantado.
Pero hay que tener paciencia, tarda muchos días en pulir las piedras... algunas quedan del tamaño de una lenteja otras no. No desgastan por igual por su dureza y tamaño de origen.
Pero buen regalo.

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Dan&Darci Advanced Professional Rock Tumbler Kit - with Digital 9-Day Polishing Timer & 3 Speed Settings - Turn Rough Rocks into Beautiful Gems : Great Science & STEM Geology Toy for Kids All Ages

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From the brand

Never Cease to explore!

Get Inspired!

Education Made Fun!

Product Description

ABOUT US:

Unique Gift Idea

Perfect STEM Project

Complete Kit

Illustrated Learning Booklet

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Rock tumbler

Top reviews from the United States

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Rock tumbler

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It’s cool!

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Top reviews from other countries

5.0 out of 5 stars Great tumbler

5.0 out of 5 stars Steine bearbeiten bis Sie blank sind…

Steine bearbeiten bis Sie blank sind…

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5.0 out of 5 stars SATISFAIT

5.0 out of 5 stars Bello

5.0 out of 5 stars Hace lo que dice.

Great tumbler

Steine bearbeiten bis Sie blank sind…

SATISFAIT

Bello

Hace lo que dice.